18672509275 has 24 divisors (see below), whose sum is σ = 26758956960. Its totient is φ = 12660130560.

The previous prime is 18672509269. The next prime is 18672509321. The reversal of 18672509275 is 57290527681.

It is a happy number.

It is not a de Polignac number, because 18672509275 - 2¹⁷ = 18672378203 is a prime.

It is a super-2 number, since 2×18672509275² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 583864 + ... + 615013.

It is an arithmetic number, because the mean of its divisors is an integer number (1114956540).

Almost surely, 2^18672509275 is an apocalyptic number.

18672509275 is a deficient number, since it is larger than the sum of its proper divisors (8086447685).

18672509275 is a wasteful number, since it uses less digits than its factorization.

18672509275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198983 (or 1198978 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 18672509275 in words is "eighteen billion, six hundred seventy-two million, five hundred nine thousand, two hundred seventy-five".